Re: [PATCH v6 18/18] pc-bios: s390x: Save iplb location in lowcore

2020-03-05 Thread Christian Borntraeger
On 04.03.20 12:42, Janosch Frank wrote: > The POP states that for a list directed IPL the IPLB is stored into > memory by the machine loader and its address is stored at offset 0x14 > of the lowcore. > > ZIPL currently uses the address in offset 0x14 to access the IPLB and > acquire flags about

Re: [PATCH v6 18/18] pc-bios: s390x: Save iplb location in lowcore

2020-03-04 Thread David Hildenbrand
On 04.03.20 14:25, Christian Borntraeger wrote: > On 04.03.20 12:42, Janosch Frank wrote: >> The POP states that for a list directed IPL the IPLB is stored into >> memory by the machine loader and its address is stored at offset 0x14 >> of the lowcore. >> >> ZIPL currently uses the address in offse

Re: [PATCH v6 18/18] pc-bios: s390x: Save iplb location in lowcore

2020-03-04 Thread Christian Borntraeger
On 04.03.20 12:42, Janosch Frank wrote: > The POP states that for a list directed IPL the IPLB is stored into > memory by the machine loader and its address is stored at offset 0x14 > of the lowcore. > > ZIPL currently uses the address in offset 0x14 to access the IPLB and > acquire flags about se

Re: [PATCH v6 18/18] pc-bios: s390x: Save iplb location in lowcore

2020-03-04 Thread David Hildenbrand
On 04.03.20 12:42, Janosch Frank wrote: > The POP states that for a list directed IPL the IPLB is stored into > memory by the machine loader and its address is stored at offset 0x14 > of the lowcore. > > ZIPL currently uses the address in offset 0x14 to access the IPLB and > acquire flags about se

[PATCH v6 18/18] pc-bios: s390x: Save iplb location in lowcore

2020-03-04 Thread Janosch Frank
The POP states that for a list directed IPL the IPLB is stored into memory by the machine loader and its address is stored at offset 0x14 of the lowcore. ZIPL currently uses the address in offset 0x14 to access the IPLB and acquire flags about secure boot. If the IPLB address points into memory wh